Vulnerability in GNU Gnutls
CVE-2026-3832
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.009 (60.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.009 · change: +0.002
Affected products
- GNU Gnutls
- Red Hat Discovery 2 — versions 1782159791, 1782166952
- Red Hat Enterprise Linux 10 — versions 0:3.8.10-4.el10_2
- Red Hat Enterprise Linux 10.0 Extended Update Support — versions 0:3.8.9-9.el10_0.19
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 0:3.8.10-4.el9_8
- Red Hat Hardened Images — versions 3.8.13-1.hum1
- Red Hat Openshift Container Platform 4
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2026:13274 (vendor-advisory, Third Party Advisory)
- access.redhat.com/security/cve/CVE-2026-3832 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
- gitlab.com/gnutls/gnutls/-/issues/1801 (Exploit, Issue Tracking, Vendor Advisory)
- access.redhat.com/errata/RHSA-2026:20613 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:20612 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:26319 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:26409 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:29197 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:58981 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-3832?
- CVE-2026-3832 is a low-severity vulnerability in GNU Gnutls, classified under CWE-179. CVSS score: 3.7/10. Published 2026-04-30.
- How severe is CVE-2026-3832?
- Low severity. CVSS v3 base score is 3.7 out of 10.